S vs IoT EMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S
This app helps installers of distributed PV power plants manage accounts and provides visual guides for microinverter installation. It offers rapid configuration, power generation data, and detailed alarm information for commissioning and diagnostics.
- Account monitoring
- Visual installation guide
- Microinverter configuration
- Power generation data
- Module-level data
- Alarm information
- Commissioning & diagnostics
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S-miles Installer is a mobile application developed by Hoymiles especially for installers of distributed PV power plants. It provides an EASY-TO-USE procedure for monitoring accounts and a visual physical layout guide for the installation of microinverters, which helps installers configure monitoring accounts rapidly, and provides installers power generation data on both plant-level & module-level as well as detailed alarm information about the power plant for commissioning & diagnostics.
IoT EMS
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Based on the Internet of things, big data, cloud computing and other modern information technologies, arcrui cloud platform connects the distributed automatic fire alarm equipment, electrical fire monitoring equipment, intelligent smoke detector, safe electricity and water and other equipment to form a network, and intelligently perceives, identifies and locates the status of these equipment, dynamically collects fire information in real time, and communicates with the public Through the cloud platform for data analysis, mining and trend analysis, it helps to achieve the goals of scientific early warning of fire, grid management, and implementation of multiple responsibility supervision. It fills the gap that the original "nine small places" and hazardous chemical production enterprises can not effectively monitor, adapts to all public and civil buildings, realizes the unattended safe electricity use, and realizes the actual needs of "automation", "intelligence", "systematization" of safe electricity use and "refinement" of electricity use management.
Screenshots
Verdict
The clearest difference is iOS requirement: IoT EMS at 13 against S's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
S ships an update monthly, IoT EMS every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | S | IoT EMS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (15 ratings) — better | — |
| Positive reviews | 65.8% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 13 — better |
| Further details — not scored | ||
| Size | 224 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Hoymiles Power Electronics Inc. | ACREL CO.,LTD |
In-app purchases
S
No in-app purchases
IoT EMS
No in-app purchases








